SMC Networks BARRICADETM SMCWGBR14-N2 User Manual page 87

factory default. If you want all the computers on the LAN exposed
to the outside world, you can disable it.
VPN - VPN Passthrough must be enabled if you want to allow VPN
◆
tunnels using IPSec, PPTP, or L2TP protocols to pass through the
Router's firewall.
PPTP Passthrough - Point-to-Point Tunneling Protocol (PPTP) allows
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the Point-to-Point Protocol (PPP) to be tunneled through an IP
network. To allow PPTP tunnels to pass through the Router, keep the
default, Enabled.
L2TP Passthrough - Layer 2 Tunneling Protocol (L2TP) is the method
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used to enable Point-to-Point sessions via the Internet on the Layer
2 level. To allow L2TP tunnels to pass through the Router, keep the
default, Enabled.
IPSec Passthrough - Internet Protocol Security (IPSec) is a suite of
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protocols for ensuring private, secure communications over Internet
Protocol (IP) networks, through the use of cryptographic security
services. To allow IPSec tunnels to pass through the Router, keep
the default, Enabled.
◆ ALG - It is recommended to enable Application Layer Gateway (ALG)
because ALG allows customized Network Address Translation (NAT)
traversal filters to be plugged into the gateway to support address and
port translation for certain application layer "control/data" protocols
such as FTP, TFTP, H323 etc.
FTP ALG - To allow FTP clients and servers to transfer data across
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NAT, keep the default Enable.
TFTP ALG - To allow TFTP clients and servers to transfer data across
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NAT, keep the default Enable.
H323 ALG - To allow Microsoft NetMeeting clients to communicate
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across NAT, keep the default Enable.
Click the Save button to save your settings.
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| Security Settings
C 10
HAPTER
Basic Security